Cryptology ePrint Archive: BibTeX Citation of Report 2011/149

@misc{cryptoeprint:2011:149,
    author = {Nicolas Veyrat-Charvillon and François-Xavier Standaert},
    title = {Generic Side-Channel Distinguishers: Improvements and Limitations},
    howpublished = {Cryptology ePrint Archive, Report 2011/149},
    year = {2011},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.